package main

import "fmt"

func main(){
	a := 10
	p := &a

	fmt.Printf("p=%v\n",*p)

	*p = 20

	fmt.Printf("a=%v\n",a)


	var p1 *int
	p1 = new(int)
	fmt.Printf("p1=%v,p1=%v",p1,*p1)
}
